Correct Answer: B

Rationale: A weight gain of 6.6 pounds is approximately equivalent to 3 liters of fluid. It is important to remember that 1 liter of fluid is equal to 1 kg, which is approximately 2.2 pounds. Therefore, when the client gains 6.6 pounds, it translates to 3 liters of fluid. Choices A, C, and D are incorrect as they do not align with the conversion rate of 1 liter of fluid to 2.2 pounds.

Correct Answer: B

Rationale: The correct answer is B: Activated partial thromboplastin time (aPTT). This test is used to monitor the effectiveness of heparin therapy. A complete blood count (CBC) (choice A) is not specific for monitoring heparin therapy. Prothrombin time (PT) (choice C) and International normalized ratio (INR) (choice D) are more commonly used to monitor warfarin therapy, not heparin.

Correct Answer: C

Rationale: The correct answer is C: Performing self-care activities. For a 5-year-old child diagnosed with cognitive impairment, it is crucial to focus on teaching them basic self-care skills. This includes activities like dressing themselves, feeding, and personal hygiene. These skills are fundamental for their daily living and independence. Choices A, B, and D are not appropriate for a young child with cognitive impairment. Acquiring job skills is not developmentally suitable at this age, making decisions may be challenging due to cognitive limitations, and reading and doing simple math may be too advanced for their current cognitive abilities.

Correct Answer: C

Rationale: The correct answer is C: Hemoglobin and hematocrit. Epoetin alfa is a medication that stimulates red blood cell production, so monitoring hemoglobin and hematocrit levels is essential to assess its effectiveness. These values reflect the oxygen-carrying capacity of the blood and can indicate if the treatment is improving anemia related to chronic kidney disease. Choices A, B, and D are incorrect. Blood urea nitrogen (BUN) and serum creatinine are indicators of kidney function, while serum potassium levels are monitored due to electrolyte imbalances commonly seen in kidney disease, but they do not directly reflect the effectiveness of epoetin alfa.

Correct Answer: C

Rationale: Hematuria is the most important assessment finding to report to the healthcare provider in a client with SLE during an exacerbation. Hematuria indicates kidney involvement, a serious complication of SLE that requires prompt medical attention. While low-grade fever, muscle atrophy, and joint pain are symptoms that can occur in SLE, hematuria signifies potential renal damage, which is a critical concern in SLE exacerbations.